Shut-off valve.



s. A. Ross;

SHUT-OFF VALVE.

APPLIUATION FILED JUNE 2, 1910. a

Patented June 20, 1911.

r14: NORRISPETERS co., v mm: 1m, 0y LY rare SAMUEL A. ROSS, OF ERIE,PENNSYLVANIA.

SHUT-OFF VALVE.

T 0 all whom it may concern:

Be it known that I, SAMUEL A. Boss, a citizen of the United States,residing at Erie, in the county of Erie and State of Pennsylvania, haveinvented certain new and useful Improvements in Shut-Off Valves; and Ido hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon, forming part of this specification.

My invention relates to shut-off valves, and has for its object theproduction of a balanced eXpansible valve, provided with sedimentremoving mechanism whereby the reversal of the valve operates to blowoff any sediment accumulating in the valve.

The features of my invention are hereinafter fully set forth anddescribed and illustrated in the accompanying drawings in which:

Figure l, is a vertical central section of the valve when closed. Fig.2, is a horizon tal section thereof. Fig. 3, is a side elevation of thevalve plug showing the sediment deposit chamber therein. Fig. 4, is aview in elevation of the opposite side of the valve plug. Fig. 5, is ahorizontal section of the valve plug on the line m-a2 in Figs. 3 and l.

In these drawings, A, indicates the valve shell, of which, a, is theinlet and, a, the outlet; B, indicates the cap closing the top of theshell, A. The valve shell, A, is bored out so as to form a cylindricalplug chamber, D, therein which is closed at the top by means of thescrew cap, B. The valve plug, E, is provided with the usual stem, E,extending upward through the cap, B, and stuffing box, B, thereon, whereit is provided with an operating handle, C.

The valve plug, E, is provided with a passage, E therethrough of thefull size of the inlet and outlet openings, a, and a, of the valveshell, and on opposite sides thereof it is cut away at e, and e, and onthe inlet side thereof a chamber, 6 is formed which operates as asediment receiving chamber, and on the opposite side of the plug, E,there is formed another chamber, 6 In the recesses c, and 6, there arecurved pressure plates, F, and F, which have springs, f, behind them toforce them normally outward against the inside of the Specification ofLetters Patent. Patented June 2{}, 1911, Application filed June 2, 1910.

Serial No. 564,597.

chamber, D; and through the plate, F, on the inlet side of the valvethere is an opening, f, corresponding to the sediment chamber, 6 and inthe center of the plate, F, in the chamber, 6 there is provided a smallclieclcvalve, f which operates as a blow-off opening. In the valve plug,E, there are also small passages, e, which connect the chambers, 0 and 6and also with the recess, Z), in the cap, B, above the plug, E, and withthe recess, (Z, in the valve shell, A, under the plug, E, so that thepressure operates against the top and bottom of the plug, and alsooperates under the pressure plates F, and F, so as to hold them outfirmly against inside of the shell A.

In operation the valve is mounted in a pipe with the inlet, a, thereoftoward the source of the fluid supply to be shut off. Then when thevalve plug is turned to the position shown in Figs. 1 and 2, the valveis in a closed position and the pressure of the fluid acting under thepressure, plate F, and through the passages, e, I), and (Z, and thenceunder the pressure plate, F, operates to hold the pressure plates, F andF, firmly seated against the inner walls of the valve shell, A, andthereby insure a tight closure of the valve. Meanwhile any scale orsediment accumulating at the inlet side of the valve passes into thesediment chamber, 0 so that when the valve is opened it will not becarried between the shell and valve plug, as is the case in ordinaryplug valves, as this valve-plug carries with it the sediment chamber andthe tained therein. To blow oft any sediment accumulating in thesediment chamber, 6 the valve plug is temporarily turned completelyaround so that the pressure plate, F, containing the sediment chamber istoward the outlet, when the pressure operates to open the check valve,7, and permits fluid to pass therethrough and through the passages, e 6,and (Z, and thence into the bottom of the sediment chamber, 0 and blowthe contents thereof out of the discharge end of the valve shell, afterwhich the valve plug can be turned back a quarter turn to allow fluid torun freely therethrough, or back to its normally closed position. Bythese means I am enabled to prevent scratching or cutting of the valveplug by reason of scale or sediment working in between it and the insideof the valve shell, and am also enabled by means of the fluid actuatedpressediment consure plates, F and F, on the valve plug, to produce avalve which has a large passage way, and is at the same time both tightand easy to operate under all conditions.

Having thus described my invention so as to enable others to constructand operate the same, what I claim as new and desire to secure byLetters-Patent is:

l. The combination in a shut-off valve, of a valve-plug having chambersin opposite sides thereof, pressure plates 'mounted in said chambers oneof which pressure plates having a sediment chamber therein, a check inthe other pressure plate, and a valve body having fluid passages thereincommunicating with the chambers in which the pressure plates aremounted, substantially as set forth.

2. The combination in a shut-0E valve of a valve-plug having chambers inopposite sides thereof and passages connecting with said chambers, fluidactuated pressure plates mounted in said chambers one of which platesbeing provided with a sediment chamber, a check-valve inthe oppositepressure plate, and a valve-body inclosing said valve-plug mechanism,substantially as set forth.

3. The combination in a shutoff valve, of a valve-plug having chambersin opposite sides thereof and passages connecting with said chambers,fluid actuated pressure plates mounted in said chambers, one of whichplates has a sediment chamber therein, a check valve in the otherpressure plate, and a valve body inclosing said plug having passages atthe ends of the plug communicating with the passages therein leading tothe chambers in the plug, whereby when the plug is in a closed positionfluid will pass through said check-valve and said passages to thepressure plate on the opposite side of the plug and blow sediment out ofthe sedi ment chamber in said plate, substantially as set forth.

In testimony whereof I affix my signature, in presence of two witnesses.

SAMUEL A. Ros s.

Witnesses JOHN L. WELLS, H. M. STURGEON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

